Hi,
Rob we have enclosed our console log let us know if this can provide some insight into the black screen issue for Facebook Sample code for Corona Build 2189.
04/06/14 6:04:04.292 pm com.apple.IconServicesAgent[195]: main Failed to composit image for binding VariantBinding [0x3cd] flags: 0x8 binding: FileInfoBinding [0x457] - extension: pptx, UTI: org.openxmlformats.presentationml.presentation, fileType: ???.
04/06/14 6:04:04.293 pm quicklookd[4316]: Warning: Cache image returned by the server has size range covering all valid image sizes. Binding: VariantBinding [0x203] flags: 0x8 binding: FileInfoBinding [0x103] - extension: pptx, UTI: org.openxmlformats.presentationml.presentation, fileType: ??? request size:16 scale: 1
04/06/14 6:04:04.656 pm Console[4318]: setPresentationOptions called with NSApplicationPresentationFullScreen when there is no visible fullscreen window; this call will be ignored.
04/06/14 6:04:19.552 pm Corona Simulator[4304]: validationTool: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/Validation
04/06/14 6:04:46.018 pm iTunes[4526]: Entered:_AMMuxedVersion2DeviceConnected, mux-device:2
04/06/14 6:04:46.022 pm iTunes[4526]: tid:1203 - unable to query device capabilities
04/06/14 6:04:47.615 pm com.apple.SecurityServer[14]: Session 100022 created
04/06/14 6:04:50.258 pm AppleMobileBackup[4533]: WARNING: Backing up ddf08ebde12c374fcf67f6146d6801f4b4d289f2
04/06/14 6:04:53.513 pm MDCrashReportTool[4535]: 4535:3674112|CrashReportCopierAFC.m:-[CrashReportCopierAFC copyAndProcessRemotePath:usingConnection:]| ERROR: Could not remove remote path at ./DiagnosticLogs/security.log.20140604T114037Z
04/06/14 6:04:56.736 pm com.apple.usbmuxd[26]: MuxTCPInputSCE received RST for 0x2-ddf08ebde12c374fcf67f6146d6801f4b4d289f2@0xfd140000:52122->0x100518e20-MDCrashReportTool/NULL:19462: sendMuxSegment connection was closed
04/06/14 6:04:56.876 pm MDCrashReportTool[4536]: 4536:4722688|CrashReportCopierAFC.m:-[CrashReportCopierAFC copyAndProcessRemotePath:usingConnection:]| ERROR: Could not remove remote path at ./DiagnosticLogs/security.log.20140604T114037Z
04/06/14 6:04:57.344 pm com.apple.usbmuxd[26]: MuxTCPInputSCE received RST for 0x2-ddf08ebde12c374fcf67f6146d6801f4b4d289f2@0xfd140000:52167->0x1002099e0-iTunes/com.apple.iTunes:26374: sendMuxSegment connection was closed
04/06/14 6:04:58.742 pm mds[39]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/old/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode.mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1801
04/06/14 6:05:09.107 pm Finder[143]: FIXME: IOUnserialize has detected a string that is not valid UTF-8, “*”.
04/06/14 6:05:09.130 pm Finder[143]: FIXME: IOUnserialize has detected a string that is not valid UTF-8, “*”.
04/06/14 6:05:18.569 pm Finder[143]: FIXME: IOUnserialize has detected a string that is not valid UTF-8, “*”.
04/06/14 6:05:38.136 pm com.apple.usbmuxd[26]: MuxTCPInputSCE received RST for 0x2-ddf08ebde12c374fcf67f6146d6801f4b4d289f2@0xfd140000:52736->0x10040e210-MDCrashReportTool/NULL:51463: sendMuxSegment connection was closed
04/06/14 6:05:38.242 pm MDCrashReportTool[4541]: 4541:4722688|CrashReportCopierAFC.m:-[CrashReportCopierAFC copyAndProcessRemotePath:usingConnection:]| ERROR: Could not remove remote path at ./DiagnosticLogs/security.log.20140604T114037Z
04/06/14 6:05:39.642 pm iTunes[4526]: AMDeviceSecureTransferPath (thread 0x10a548000): disableDelta: FALSE
04/06/14 6:06:21.534 pm mds[39]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/old/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode.mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1801
04/06/14 6:06:30.116 pm iTunes[4526]: BUG in libdispatch client: kevent[EVFILT_WRITE] delete: “No such file or directory” - 0x2
04/06/14 6:07:53.000 pm kernel[0]: en1: BSSID changed to ec:43:f6:76:54:58
04/06/14 6:07:54.000 pm kernel[0]: AirPort: RSN handshake complete on en1